Transformed old Tester into NUnit tests

.gitignore

@@ -1,5 +1,5 @@
-Tewl/Directory.Build.props
 Tewl/Generated Code/
+Tests/Generated Code/
 
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
 <PropertyGroup>
-<TargetFramework>netstandard2.0</TargetFramework>
+<TargetFramework>net9.0</TargetFramework>
 </PropertyGroup>
 </Project>

EWL ReSharper Settings.DotSettings

@@ -478,6 +478,7 @@
 	<s:String x:Key="/Default/Environment/InlayHints/VBParameterNameHintsOptions/ShowParameterNameHints/@EntryValue">Never</s:String>
 	<s:Boolean x:Key="/Default/Environment/ParameterNameHintsOptions/ShowParameterNameHints/@EntryValue">False</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SearchAndNavigation/MergeOccurences/@EntryValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EPsiFeatures_002EVisualStudio_002EBackend_002EDaemon_002EHighlightingSettingsMigrator/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EFeature_002EServices_002ECSharp_002EParameterNameHints_002ECSharpParameterNameHintsOptionsMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EFeature_002EServices_002EVB_002EParameterNameHints_002EVBParameterNameHintsOptionsMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpAttributeForSingleLineMethodUpgrade/@EntryIndexedValue">True</s:Boolean>
@@ -1311,6 +1312,7 @@
 	<s:Boolean x:Key="/Default/Housekeeping/VsActionManager/KeyboardShortcutToVsCommand/=Up/Commands/=_003Cdata_0020id_003D_0022_0028_007B1496a755_002D94de_002D11d0_002D8c3f_002D00c04fc2aae2_007D_003A11_0029_0022_0020shortcut_003D_0022Up_0022_0020_002F_003E/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Housekeeping/VsActionManager/KeyboardShortcutToVsCommand/=Up/Commands/=_003Cdata_0020id_003D_0022_0028_007B1496a755_002D94de_002D11d0_002D8c3f_002D00c04fc2aae2_007D_003A1227_0029_0022_0020shortcut_003D_0022Up_0022_0020_002F_003E/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Housekeeping/VsActionManager/KeyboardShortcutToVsCommand/=Up/Commands/=_003Cdata_0020id_003D_0022_0028_007B1496a755_002D94de_002D11d0_002D8c3f_002D00c04fc2aae2_007D_003A1502_0029_0022_0020shortcut_003D_0022Up_0022_0020_002F_003E/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/Housekeeping/VsHighlighting/SuppressVsSquiggles/@EntryValue">True</s:Boolean>
 	<s:String x:Key="/Default/Housekeeping/VsSavedAutocompletionValue/OverrideParameterInfo/=CSharp/@EntryIndexedValue">NotOverridden</s:String>
 	<s:String x:Key="/Default/Housekeeping/VsSavedAutocompletionValue/OverrideParameterInfo/=Css/@EntryIndexedValue">NotOverridden</s:String>
 	<s:String x:Key="/Default/Housekeeping/VsSavedAutocompletionValue/OverrideParameterInfo/=Html/@EntryIndexedValue">NotOverridden</s:String>

TEWL.sln

@@ -1,11 +1,11 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.29911.98
+# Visual Studio Version 18
+VisualStudioVersion = 18.1.11312.151 d18.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tewl", "Tewl\Tewl.csproj", "{C6158C5A-CD33-4193-80CC-A9BBD7EC60D7}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TewlTester", "TewlTester\TewlTester.csproj", "{F250853F-5A4E-46E8-BFFB-C142DBE996F6}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "Tests\Tests.csproj", "{F250853F-5A4E-46E8-BFFB-C142DBE996F6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Tests/.editorconfig

@@ -0,0 +1,3 @@
+# generated by EWL
+[*.cs]
+csharp_default_internal_modifier = implicit

Tests/ByteFormattingTests.cs

@@ -0,0 +1,23 @@
+namespace Tests;
+
+class ByteFormattingTests {
+	[ Test ]
+	public void Bytes() {
+		Assert.That( FormattingMethods.GetFormattedBytes( 64 ), Is.EqualTo( "64 bytes" ) );
+	}
+
+	[ Test ]
+	public void Kilo() {
+		Assert.That( FormattingMethods.GetFormattedBytes( 64_000 ), Is.EqualTo( "62 KiB" ) );
+	}
+
+	[ Test ]
+	public void Mega() {
+		Assert.That( FormattingMethods.GetFormattedBytes( 64_000_000 ), Is.EqualTo( "61 MiB" ) );
+	}
+
+	[ Test ]
+	public void Giga() {
+		Assert.That( FormattingMethods.GetFormattedBytes( 64_500_000_000 ), Is.EqualTo( "60.1 GiB" ) );
+	}
+}

Tests/Directory.Build.props

@@ -0,0 +1,36 @@
+<Project>
+<Import Project="$([MSBuild]::GetPathOfFileAbove('$(MSBuildThisFile)','$(MSBuildThisFileDirectory)../'))" />
+<PropertyGroup>
+<AssemblyName>Tests</AssemblyName>
+<RootNamespace>Tests</RootNamespace>
+<Version>28.0.41.0</Version>
+<GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
+<Product>TEWL</Product>
+<AssemblyTitle>TEWL - Tests</AssemblyTitle>
+<PackageVersion>0</PackageVersion>
+<RuntimeIdentifier>win-x64</RuntimeIdentifier>
+<CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
+<Nullable>enable</Nullable>
+<CopyDebugSymbolFilesFromPackages>true</CopyDebugSymbolFilesFromPackages>
+<DefaultItemExcludesInProjectFolder>$(DefaultItemExcludesInProjectFolder);Directory.Build.props;Directory.Build.targets;**/*.ewlt.cs</DefaultItemExcludesInProjectFolder>
+<GarbageCollectionAdaptationMode>0</GarbageCollectionAdaptationMode>
+<NuGetAuditMode>direct</NuGetAuditMode>
+<IsTransformWebConfigDisabled>true</IsTransformWebConfigDisabled>
+</PropertyGroup>
+<ItemGroup>
+<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+<PackageReference Include="NUnit.Analyzers" Version="4.10.0">
+<PrivateAssets>all</PrivateAssets>
+<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+</PackageReference>
+<PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
+<Using Include="System" />
+<Using Include="System.Collections.Generic" />
+<Using Include="System.IO" />
+<Using Include="System.Linq" />
+<Using Include="NUnit.Framework" />
+<Using Include="Tewl" />
+<Using Include="Tewl.Tools" />
+<Using Include="Humanizer.StringExtensions"><Static>True</Static></Using>
+</ItemGroup>
+</Project>

Tests/InputValidation/UrlTests.cs

@@ -0,0 +1,162 @@
+using Tewl.InputValidation;
+
+namespace Tests.InputValidation;
+
+class UrlTests {
+	private Validator validator;
+
+	[ SetUp ]
+	public void SetupValidator() {
+		validator = new Validator();
+	}
+
+	[ Test ]
+	public void TestObviouslyValidUrl() {
+		var result = getValidationResult( "http://www.google.com" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestEmail() {
+		var result = getValidationResult( "brendan@brendan.com" );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestObviouslyValidSecureUrl() {
+		var result = getValidationResult( "https://www.google.com" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestSchemelessUrl() {
+		var result = getValidationResult( "google.com" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestValidUppercaseUrl() {
+		var result = getValidationResult( "HTTP://EN.EXAMPLE.ORG/" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestUrlWithPort() {
+		var result = getValidationResult( "http://vnc.example.com:5800" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestLocalhostUrl() {
+		var result = getValidationResult( "https://localhost:44310" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestLongerUrl() {
+		var result = getValidationResult(
+			"http://en.example.org/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestRidiculouslyLongUrl() {
+		var result = getValidationResult(
+			"http://en.example.org/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" +
+			"/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL/WIKI/URL" );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestValidUrlWithQueryString() {
+		var result = getValidationResult( "http://www.google.com?first_name=John&last_name=Doe" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestWeirdFtpUrl() {
+		var result = getValidationResult( "ftp://asmith@ftp.example.org" );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	[ Test ]
+	public void TestWeirdNewsUrl() {
+		/* This should fail cause it doesn't match our protocol whitelist. */
+		var result = getValidationResult( "news://rec.gardens.roses" );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestWord() {
+		var result = getValidationResult( "supercalafragilisticexpialadocious" );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestSentence() {
+		var result = getValidationResult( "I am the very model of a modern major general." );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestInt() {
+		var result = getValidationResult( 42.ToString() );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestDecimal() {
+		var result = getValidationResult( 48151623.42m.ToString() );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestDouble() {
+		var result = getValidationResult( 48151623.42.ToString() );
+		Assert.That( validator.ErrorsOccurred, Is.True );
+	}
+
+	[ Test ]
+	public void TestAllowedEmpty() {
+		var result = validator.GetUrl( new ValidationErrorHandler( "" ), "", true );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+		result = validator.GetUrl( new ValidationErrorHandler( "" ), string.Empty, true );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+		result = validator.GetUrl( new ValidationErrorHandler( "" ), "    ", true );
+		Assert.That( validator.ErrorsOccurred, Is.False );
+	}
+
+	private string getValidationResult( string possibleUrl ) {
+		return validator.GetUrl( new ValidationErrorHandler( "" ), possibleUrl, false ).Value;
+	}
+}

Tests/OldTester.cs

@@ -0,0 +1,76 @@
+using Tewl.IO;
+using Tewl.IO.TabularDataParsing;
+
+namespace Tests;
+
+[ TestFixture ]
+class Program {
+	[ Test ]
+	public static void OldMain() {
+		testExcelWriting();
+		testCsvWriting();
+		testCsv();
+		testTabDelimitedWriting();
+		testXls();
+	}
+
+	private static void testExcelWriting() {
+		var excelFile = new ExcelFileWriter();
+		excelFile.DefaultWorksheet.AddHeaderToWorksheet( "ID", "Name", "Date", "Email", "Website" );
+		excelFile.DefaultWorksheet.AddRowToWorksheet( "123", "Greg", "1/1/2012", "greg.smalter@gmail.com", "https://www.google.com" );
+		excelFile.DefaultWorksheet.AddRowToWorksheet( "321", "", "12/19/2020", "", "https://microsoft.com" );
+
+		using var stream = File.OpenWrite( "tewlTestTabularWrite.xlsx" );
+		excelFile.SaveToStream( stream );
+	}
+
+	private static void testCsvWriting() {
+		var csvFile = new CsvFileWriter();
+
+		using var stream = new StreamWriter( File.OpenWrite( "tewlTestTabularWrite.csv" ) );
+		writeData( csvFile, stream );
+	}
+
+	private static void testTabDelimitedWriting() {
+		var csvFile = new TabDelimitedFileWriter();
+
+		using var stream = new StreamWriter( File.OpenWrite( "tewlTestTabularWrite.txt" ) );
+		writeData( csvFile, stream );
+	}
+
+	// It's sort of a failure that the Excel writer cannot be passed here. But between there being more than one worksheet and other problems, it's hard to
+	// have it implement the same interface.
+	private static void writeData( TextBasedTabularDataFileWriter writer, TextWriter stream ) {
+		writer.AddValuesToLine( "ID", "Name", "Date", "Email", "Website" );
+		writer.WriteCurrentLineToFile( stream );
+		writer.AddValuesToLine( "123", "Greg", "1/1/2012", "greg.smalter@gmail.com", "https://www.google.com" );
+		writer.WriteCurrentLineToFile( stream );
+		writer.AddValuesToLine( "123", "Greg", "1/1/2012", "greg.smalter@gmail.com", "https://www.google.com" );
+		writer.WriteCurrentLineToFile( stream );
+	}
+
+	private static void testCsv() {
+		var csvParser = TabularDataParser.CreateForCsvFile( @"..\..\..\..\TestFiles\TewlTestBook.csv", [ ] );
+		var validationErrors = new List<DataValidationError>();
+
+		csvParser.ParseAndProcessAllLines( importThing, validationErrors );
+
+		Console.WriteLine( $"CSV test: {csvParser.RowsWithoutValidationErrors} rows imported without error." );
+	}
+
+	private static void testXls() {
+		var xlsParser = TabularDataParser.CreateForExcelFile( @"..\..\..\..\TestFiles\TewlTestBook.xlsx", [ ] );
+		var validationErrors = new List<DataValidationError>();
+
+		xlsParser.ParseAndProcessAllLines( importThing, validationErrors );
+
+		Console.WriteLine( $"Excel test: {xlsParser.RowsWithoutValidationErrors} rows imported without error." );
+	}
+
+	private static void importThing( ParsedLine line, Tewl.InputValidation.Validator validator ) {
+		var value = line[ "dATe" ];
+		var email = line[ "email" ];
+		var website = line[ "website" ];
+		Console.WriteLine( line.LineNumber + ": Date: " + value + $", Email: {email}, Website: {website}" );
+	}
+}

TewlTester/TewlTester.csproj → Tests/Tests.csproj

@@ -1,10 +1,13 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0-windows</TargetFramework>
+    <TargetFramework>net9.0-windows</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="NUnit" Version="4.4.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Tewl\Tewl.csproj" />
   </ItemGroup>

Tewl/Directory.Build.props

@@ -0,0 +1,28 @@
+<Project>
+<Import Project="$([MSBuild]::GetPathOfFileAbove('$(MSBuildThisFile)','$(MSBuildThisFileDirectory)../'))" />
+<PropertyGroup>
+<AssemblyName>Tewl</AssemblyName>
+<RootNamespace>Tewl</RootNamespace>
+<Version>28.0.41.0</Version>
+<GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
+<Product>TEWL</Product>
+<AssemblyTitle>TEWL</AssemblyTitle>
+<PackageVersion>0</PackageVersion>
+<CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
+<Nullable>enable</Nullable>
+<CopyDebugSymbolFilesFromPackages>true</CopyDebugSymbolFilesFromPackages>
+<DefaultItemExcludesInProjectFolder>$(DefaultItemExcludesInProjectFolder);Directory.Build.props;Directory.Build.targets;**/*.ewlt.cs</DefaultItemExcludesInProjectFolder>
+<NuGetAuditMode>direct</NuGetAuditMode>
+<IsTransformWebConfigDisabled>true</IsTransformWebConfigDisabled>
+</PropertyGroup>
+<ItemGroup>
+<InternalsVisibleTo Include="Tests" />
+<Using Include="System" />
+<Using Include="System.Collections.Generic" />
+<Using Include="System.IO" />
+<Using Include="System.Linq" />
+<Using Include="Tewl" />
+<Using Include="Tewl.Tools" />
+<Using Include="Humanizer.StringExtensions"><Static>True</Static></Using>
+</ItemGroup>
+</Project>